Too Easy
-The very first time i played i got to mars in 3 days?! Even without any more then one fuel power up and one launch pad power up i almost got to the moon on the first day. I'd say double the distance to the moon and mars and cut the bonus's by 25%. Plus it would also be nice to be able to go to all the planets. Maybe thats for the next one ;).
-On the 4th day i got like 1.2 million dollars :S. Maybe cut those bonus's down like 75% come to think of it.
-What does that million dollar bonus do anyways? It seemed to have no affect on the gameplay?
-The new radar rocks. Much improved over the first one. Couldnt figure out anything on it in the first one.
-A high/medium/low graphics option would definitly help. You could play the game much quicker without lag if you could degrade the graphics just a little.